MESON Chess Problem Database

Problem Display
PID: 179941 (8/5p1K/3Q2Pn/1N1pp1b1/3pk3/3R1RP1/4P3/q7 w - - 0 1)

Gross, Erwin

Die Schwalbe, 1962

8/5p1K/3Q2Pn/1N1pp1b1/3pk3/3R1RP1/4P3/q7

#2

8 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sc3+?
      • 1...dxc3
        • 2.Qxd5#
      • 1...Qxc3!
    • 1.Qb4?
      • threat
        • 2.Sd6#
      • 1...Qa6
        • 2.Sc3#
      • 1...Be7
        • 2.Rde3#
      • 1...Sf5!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Sd6#
      • 1...Be7
        • 2.Rf4#
      • 1...Qa3
        • 2.Rxd4#
      • 1...Qa6
        • 2.Rxd4#
      • 1...Sf5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • P(b);XS(E)::QAB1(F),XP(d)
      • Refutation
        • Q(a);XS(E)
    • Try
      • Q(F);P_PINP(b)
      • Threat
        • S(E)
      • Vars
        • Q(a);N_GUARD::S(E)
        • B(f);N_GUARD::R1(B)
      • Refutation
        • S(g);
  • Actual
    • Q(F);P_PINP(e)
    • Threat
      • S(E)
    • Vars
      • B(f);N_GUARD::R1(C)
      • Q(a);N_GUARD::R1(B),XP(b)
      • S(g);N_GUARD::QAB1(F),XS(g)
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